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Was asked about reloading .338 RUM

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/13/2012 at 21:17
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Optics Master
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Joined: October/17/2009
Location: STATESIDE
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Points: 2455
Anyone doing this???
 
I stick to modified .338LM...
 
I believe I can give decent data but it is a different beast...
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: October/13/2012 at 22:11
sakomato View Drop Down
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Joined: February/28/2008
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I reload for a 338RUM
 
If your gun is factory then my data may be a little different.  My gun has a 36" Brux barrel and a shorter throat than factory guns.  It is a rebarrel of a 338 win mag and I had the gunsmith set the lands where I could fit the mag and still load somewhat close to the lands.
 
Because of that I have a smaller combustion chamber volume and can not load up to max per the manual.  My Nosler manual listed a max of 98 grains with a 225 gr bullet but when I load over 94 grains I lose the primer pockets.
 
So my load is 94 grs of RL25 with a Fed215M primer and gets 3075 fps which is just fine for me.
 
With a long throat I suspect you could load higher but I also suspect that the Remington brass is a little soft and you may have the same problem.  The Lapua brass is the one major advantage of the 338LM over the 338RUM.
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